JP2022112767A - X-ray fluoroscopic apparatus - Google Patents

Abstract

To provide an X-ray fluoroscopic apparatus which can perform autopositioning to more rotation positions while suppressing increase in the number of memory switches.SOLUTION: An X-ray fluoroscopic apparatus comprises: a C arm 9 which supports an X-ray tube 5 and an X-ray detector 7 in an opposite manner and is rotatable around orthogonal 2 axes; a rotation position storage unit 61 which stores rotation position information of the C arm 9 in association with any of a plurality of memory switches 55; and a touch panel 43 which displays the rotation position information stored in association with the selected memory switch 55. The rotation position storage unit 61 is configured to store the plural pieces of rotation position information for each memory switch 55. The touch panel 43 is configured to display any of the plural pieces of rotation position information stored in association with the memory switch 55 in a prescribed display mode when the memory switch 55 is operated in a prescribed operation mode.SELECTED DRAWING: Figure 3

Description

The present invention is an X-ray fluoroscope that performs X-ray imaging from multiple directions by rotating an X-ray tube and an X-ray detector in a state of being opposed to each other and rotating them in the body axis direction and around the body axis of the subject. It relates to a photographing device.

In the medical field, X-ray fluoroscopy or an X-ray fluoroscopy apparatus for X-ray imaging is indispensable when performing procedures or examinations using catheter procedures in the circulatory system, for example, the cardiovascular system. It is a thing. In this surgical procedure, X-rays are irradiated from an arbitrary direction to the circulatory organ region of the subject to perform fluoroscopic imaging. The operator appropriately manipulates the catheter while referring to the X-ray image data obtained by fluoroscopic imaging, and advances the surgical procedure.

An X-ray fluoroscopic imaging apparatus includes a tabletop on which a subject is placed, an imaging system including an X-ray tube and an X-ray detector, a C-shaped arm (C-arm) for supporting the imaging system, and the like. The X-ray tube and the X-ray detector are provided at one end and the other end of the C-arm, and the C-arm is arranged such that the X-ray tube and the X-ray detector are arranged opposite to each other with the subject sandwiched therebetween. . The C-arm is configured to be rotatable at a predetermined rotation angle in the body axis direction and the direction around the body axis of the subject (hereinafter referred to as "rotation direction"). By rotating the C-arm to an arbitrary rotation position (an arbitrary rotation direction and an arbitrary rotation angle), X-ray imaging can be performed on the site of interest of the subject from multiple directions.

In a conventional X-ray fluoroscopy apparatus, a function (auto-positioning function) of linking and storing a predetermined rotational position to a memory switch and moving the C-arm to the stored rotational position at an arbitrary timing. ) (see, for example, Patent Document 1). A conventional X-ray fluoroscopy apparatus having an auto-positioning function includes an operator console on which a memory execution switch, a rotation execution switch, and a plurality of memory switches are arranged.

As an example of an operation for storing a rotational position in association with a memory switch, the first memory switch is pressed while the C-arm is moved to a predetermined rotational position, and then the storage execution switch is operated. By operating the storage execution switch, the information on the rotational position of the C-arm at the present time is linked to the first memory switch and stored. By performing the same operation for the second and subsequent memory switches, information on different rotational positions is linked and stored for a long period of time for each of the plurality of memory switches.

When moving the C-arm to a desired rotational position, the memory switch linked to the information on the rotational position is selected and pressed, and then the rotation execution switch is operated. Automatically move to position. With such an auto-positioning function, the C-arm can be quickly rotated to a plurality of rotation positions corresponding to the number of memory switches.

WO2007/091295

However, the conventional example having such a configuration has the following problems.

In recent years, there is a tendency to move the C-arm to more rotational positions when proceeding with surgical procedures, and to irradiate X-rays from a large number of rotational positions to acquire X-ray images. In addition, there is a tendency to perform surgical procedures using an X-ray fluoroscopic imaging apparatus for more subjects. As a result, the number of pivot positions to be stored becomes enormous.

A conventional X-ray fluoroscopy apparatus requires a number of memory switches corresponding to the number of rotational positions to be stored. Therefore, if the number of rotational positions to be stored becomes enormous, the number of memory switches also becomes enormous. However, since the range of the operation panel is limited, it is difficult to arrange a large number of memory switches on the operation panel. It is also conceivable to reduce the size of each memory switch in order to dispose a large number of memory switches on the operation panel. There is Therefore, there is a limit to how small the memory switch can be handled.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides an X-ray fluoroscopic imaging apparatus capable of auto-positioning to a greater number of rotational positions while suppressing an increase in the number of memory switches. intended to provide

In order to achieve these objects, the present invention has the following configuration.
That is, the X-ray fluoroscopy apparatus according to the present invention comprises an X-ray tube for irradiating an object to be examined with X-rays, and an X-ray detector arranged opposite to the X-ray tube for detecting the X-rays transmitted through the object. a supporting mechanism that supports the X-ray tube and the X-ray detector so as to face each other and is rotatable about two orthogonal axes; a rotation position detection unit for detecting rotation angle information as rotation position information; a plurality of memory switches; and a rotation position storage unit for storing the rotation position information in association with one of the memory switches. a rotation position information display unit for displaying the rotation position information stored in association with the selected memory switch by selecting one of the memory switches; a rotation instruction unit configured to rotate the support mechanism in the rotation direction and the rotation angle corresponding to the rotation position information displayed on the display unit; Each of the memory switches is configured to store a plurality of pieces of rotational position information, and the rotational position information display section is displayed by operating the memory switch in a predetermined operation mode. Any one of the plurality of rotational position information stored in association with the switch is displayed in a predetermined display mode.

The configuration includes a rotation position information display section, a plurality of memory switches, a rotation position storage section, and a rotation instruction section. The rotational position storage unit stores rotational position information of the support mechanism in association with one of the memory switches, and is configured to store a plurality of pieces of rotational position information for each of the memory switches. ing. That is, each memory switch is configured to be associated with and stored with a plurality of rotational positions. Therefore, it is possible to reduce the number of memory switches arranged in the X-ray fluoroscopic imaging apparatus and store more rotational position information in association with the memory switches.

By selecting one of the memory switches, the rotation position information display section displays the rotation position information stored in association with the selected memory switch. Further, when the memory switch is operated in a predetermined operation mode, the rotation position information display section displays any one of the plurality of rotation position information stored in association with the memory switch in a predetermined display mode. is configured to That is, in a configuration in which a plurality of rotation positions are stored in association with one memory switch, information on each rotation position can be selectively read out and displayed according to the operation mode of the memory switch.

By operating the rotation instruction section, the support mechanism can be rotated in the rotation direction and the rotation angle corresponding to the rotation position information displayed on the rotation position information display section. Therefore, in a configuration in which a plurality of rotational positions are stored in association with one memory switch, one rotational position is selected from the plurality of stored rotational positions and the support mechanism is moved to the selected rotational position. Rotating operation becomes possible.

Further, in the above-described invention, each of the memory switches is arranged at a position corresponding to the rotation direction stored in association with the memory switch, with reference to a reference region indicating the position of the subject. is preferred.

[Function and Effect] According to the X-ray fluoroscopy apparatus of the present invention, the position at which each memory switch is arranged with reference to the reference region is the direction of the rotational position stored in association with the memory switch. defined to correspond to

With such a configuration, it is determined in which direction the rotational position stored in association with the memory switch is in relation to the reference area based on the position where the memory switch is arranged with respect to the reference area. The operator can intuitively grasp this. Therefore, the time required for the auto-positioning operation can be shortened, and the occurrence of erroneous operations in the auto-positioning operation can be reliably avoided.

In order to achieve such an object, the present invention may take the following configuration.
That is, the X-ray fluoroscopy apparatus according to the present invention comprises an X-ray tube for irradiating an object to be examined with X-rays, and an X-ray detector arranged opposite to the X-ray tube for detecting the X-rays transmitted through the object. a supporting mechanism that supports the X-ray tube and the X-ray detector so as to face each other and is rotatable about two orthogonal axes; a rotation position detection unit for detecting rotation angle information as rotation position information; a plurality of memory switches; and a rotation position storage unit for storing the rotation position information in association with one of the memory switches. a rotation position information display unit for displaying the rotation position information stored in association with the selected memory switch by selecting one of the memory switches; a rotation instruction unit for rotating the support mechanism in the rotation direction and the rotation angle corresponding to the rotation position information displayed on the display unit; and a rotation position information erasing section for erasing the rotation position information stored in association with each of the memory switches, using an operation instructing a predetermined specific process as a trigger.

[Function and Effect] According to the X-ray fluoroscopy apparatus of the present invention, there is provided a rotation position information display section, a plurality of memory switches, a rotation position storage section, a rotation instruction section, and rotation position information. and an erasing section. The rotation position storage unit stores the rotation position information of the support mechanism in association with one of the memory switches. By selecting one of the memory switches, the rotation position information display section displays the rotation position information stored in association with the selected memory switch. By operating the rotation instruction section, the support mechanism is rotated in the rotation direction and the rotation angle corresponding to the rotation position information displayed on the rotation position information display section. By the auto-positioning operation using such a configuration, after the rotational position information of the support mechanism is stored in association with the memory switch, the support mechanism is moved again to the rotational position during the surgical procedure performed on the subject. It is possible to reproduce the conditions of X-ray fluoroscopy.

When an operation is performed to instruct a predetermined specific process out of a series of inspection processes for the subject, the rotation position information erasing section is triggered by the operation to delete the number of times stored in association with each of the memory switches. Delete motion position information. With such a configuration, when a series of inspection processes for the subject is completed, the rotation position information stored in association with each of the memory switches is automatically erased. In other words, the rotation position information stored in association with the memory switch when the subject is inspected is stored only during the inspection of the subject.

In this way, even if it becomes necessary to store a large number of rotation positions by performing inspections on a large number of subjects, the information on the rotation positions is erased each time the inspection of the subject is completed. be. Therefore, it is not necessary to keep storing the rotation position information for all the subjects in association with separate memory switches. That is, the number of memory switches is limited to the number of pivot positions that need to be stored in the examination of one subject. Therefore, while reducing the number of memory switches arranged in the X-ray fluoroscopy apparatus, it is possible to appropriately perform examinations using the auto-positioning operation for a large number of subjects.

Further, in the above-described invention, there is provided a storage mode shift instructing section for shifting to a storage mode in which the rotational position information is stored in the memory switch by the rotational position storage section, and the rotational position storage section is configured to store the rotational position information. By operating any one of the memory switches in the mode transition state, the rotation direction and the rotation angle of the support mechanism at the time of the operation are used as the rotation position information and correspond to the memory switch. It is preferably configured to be attached and stored.

[Function and Effect] According to the X-ray fluoroscopy apparatus according to the present invention, by operating one of the memory switches, the rotation position storage unit stores the rotation direction and rotation of the support mechanism at the time when the operation is performed. The movement angle is stored as rotation position information in association with a memory switch. Therefore, by operating the memory switch when it is determined that the support mechanism is rotating to an appropriate rotating position to be stored, information on the rotating position can be stored. As a specific example, by operating a memory switch when it is determined that a suitable X-ray image has been acquired in X-ray fluoroscopy, information on the rotational position of the support mechanism at the time of acquisition of the X-ray image is automatically acquired. remembered. That is, since it is possible to quickly and accurately store the information of the rotation position according to the imaging conditions of the X-ray image, it is possible to easily and precisely reproduce the rotation position of the support mechanism necessary for acquiring the X-ray image later. .

Further, in the above-described invention, it is preferable to provide a selected memory switch display mechanism for displaying the memory switch most recently operated by the operator among the plurality of memory switches in a manner different from the other memory switches.

[Function and Effect] According to the X-ray fluoroscopy apparatus of the present invention, the memory switch operated most recently by the operator is displayed in a manner different from other memory switches by the selected memory switch display mechanism. With such a configuration, the operator can reliably identify the most recently operated memory switch among the plurality of memory switches, that is, the memory switch that is currently selected for the auto-positioning operation. Therefore, it is possible to avoid erroneous operations in the auto-positioning operation and to shorten the time required for the operation.

According to the X-ray fluoroscopic imaging apparatus according to the present invention, in the first aspect, the rotational position storage unit stores the rotational position information of the support mechanism in association with one of the memory switches, and the memory switch is configured to store a plurality of pieces of rotation position information for each of the. That is, each memory switch is configured to be associated with and stored with a plurality of rotational positions. Therefore, it is possible to reduce the number of memory switches arranged in the X-ray fluoroscopic imaging apparatus and store more rotational position information in association with the memory switches.

In the second aspect, the rotational position storage unit stores the rotational position information of the support mechanism in association with one of the memory switches. When an operation is performed to instruct a predetermined specific process out of a series of inspection processes for the subject, the rotation position information erasing section is triggered by the operation to delete the number of times stored in association with each of the memory switches. Delete motion position information. Therefore, even if it becomes necessary to store a large number of rotational positions by performing inspections on a large number of subjects, the information on the rotational positions is erased each time the inspection of the subjects is completed. Therefore, it is not necessary to keep storing the rotation position information for all the subjects in association with separate memory switches. Therefore, it is possible to reduce the number of memory switches arranged in the X-ray fluoroscopic imaging apparatus and perform auto-positioning to a greater number of rotation positions for a large number of subjects.

1 is a front view for explaining the overall configuration of an X-ray fluoroscopic imaging apparatus according to an embodiment; FIG. It is a right view explaining the whole structure of the X-ray fluoroscopy apparatus which concerns on an Example. 1 is a functional block diagram illustrating an outline of an X-ray fluoroscopic apparatus according to an embodiment; FIG. FIG. 4 is a schematic diagram for explaining the rotation direction of the C-arm according to the embodiment; 3 is a perspective view showing an outline of an input unit according to an example; FIG. FIG. 10 is a diagram showing a display screen in the initial mode of the touch panel according to the embodiment; 1 is a functional block diagram for explaining the essential parts of an X-ray fluoroscopic apparatus according to an embodiment; FIG. 4 is a list showing correspondence between memory switches and memories according to the embodiment, and information on rotational positions registered in advance in the memory. 4 is a flowchart for explaining various operation steps in the X-ray fluoroscopy apparatus according to the embodiment; (a) is a flow chart of the auto positioning operation in the initial mode, (b) is a flow chart of the operation for registering the rotation position information in the first memory switch group in the registration mode, and (c) is a flow chart of the first position in the edit mode. FIG. 10 is a flowchart of an operation for registering rotation position information in two memory switch groups; FIG. It is a figure which shows the display screen of a touch panel in step S3 which concerns on an Example. It is a functional block diagram explaining the principal part of the X-ray fluoroscopy apparatus in step S3 which concerns on an Example. It is a figure which shows the display screen of a touch panel in step P1 which concerns on an Example. FIG. 10 is a functional block diagram illustrating the essential parts of the X-ray fluoroscopic imaging apparatus in step P2 according to the embodiment; It is a figure which shows the display screen of a touch panel in step P2 which concerns on an Example. It is a figure which shows the display screen of a touch panel in step P5 which concerns on an Example. FIG. 10 is a functional block diagram for explaining the essential parts of the X-ray fluoroscopic imaging apparatus in step P5 according to the embodiment; FIG. 10 is a diagram showing a touch panel when a manual registration mode is selected in step P4 according to the embodiment; It is a figure which shows the display screen of a touch panel in step T1 which concerns on an Example. FIG. 10 is a functional block diagram illustrating the essential parts of the X-ray fluoroscopic imaging apparatus in step T3 according to the embodiment; It is a figure which shows the display screen of a touch panel in step T3 which concerns on an Example. 4 is a functional block diagram showing a control mechanism of a position information erasing section according to the embodiment; FIG. FIG. 11 is a plan view showing the configuration of an operator console according to a conventional example; FIG. 10 is a plan view showing a problem of the conventional operator console; FIG. 11 is a plan view showing the configuration of an operator console according to a modification; FIG. 11 is a plan view showing the operator console in step S3 according to a modification;

Embodiments of the present invention will be described below with reference to the drawings.

<Explanation of overall configuration>
As shown in FIGS. 1 and 2, the X-ray fluoroscopy apparatus 1 according to the embodiment has an X-ray tube 5 and an X-ray detector 7 sandwiching a top plate 3 on which a subject M in a supine posture is placed. They are arranged facing each other. The X-ray tube 5 irradiates the subject M with X-rays. The X-ray detector 7 detects X-rays emitted from the X-ray tube 5 and transmitted through the subject M, converts them into electrical signals, and outputs them as X-ray detection signals. An example of the X-ray detector 7 is an FPD (Flat Panel Detector).

The X-ray tube 5 and the X-ray detector 7 are provided on the C-arm 9 respectively. The C-arm 9 has a substantially C-shaped curved shape. The X-ray tube 5 is provided on one end side of the C-arm 9 , and the X-ray detector 7 is provided on the other end side of the C-arm 9 . The C-arm 9 is held by an arm holding member 11 and configured to slide along an arcuate path of the C-arm 9 indicated by RA. By sliding in the direction indicated by symbol RA, the C-arm 9 rotates around an axis orthogonal to the body axis of the subject M (hereinafter also referred to as "body axis direction").

The arm holding member 11 is arranged on the side surface of the column 13, and is rotatable around a horizontal axis RB (hereinafter also referred to as "around the body axis") parallel to the x-direction (longitudinal direction of the top plate 3). is configured to be The C-arm 9 held by the arm holding member 11 rotates around the body axis of the subject M as the arm holding member 11 rotates.

As described above, in the embodiment, the C-arm 9 rotates independently around two orthogonal axes (for example, in the body axis direction and around the body axis of the subject M). The body axis direction and the direction around the body axis of the subject M are hereinafter referred to as "rotational direction". The C-arm 9 is configured to be rotatable about two orthogonal axes along each of the arc paths RA and RB, so that the subject M can be irradiated with X-rays from any direction. . The C-arm 9 corresponds to the support mechanism in the present invention.

As shown in FIGS. 1 and 2, the initial state of the C-arm 9 is the state in which the X-ray tube 5 and the X-ray detector 7 are positioned vertically with respect to the subject M. FIG. The rotational position of the C-arm 9 in the initial state is defined as the initial position of the C-arm 9 . Regarding the initial position of the C-arm 9, the rotation angle of the C-arm is set to 0° in both the body axis direction and the body axis circumference.

The column 13 is supported by a support base 15 arranged on the floor surface, and configured to be horizontally movable in the y-direction (transverse direction of the top plate 3). The arm supporting member 11 and the C-arm 9 supported by the column 13 move in the y-direction as the column 13 moves horizontally. A collimator 17 is provided below the X-ray tube 5 and restricts the X-rays emitted from the X-ray tube 5 to a predetermined shape. An example of a shape that limits X-rays is a cone shape that is a pyramid.

Next, a rotating mechanism for the C-arm 9 will be described. Rotation of the C-arm 9 in the body axis direction of the subject M is realized by a drive mechanism inside the arm holding member 11 . A part of a belt 19 fixed at both ends to the C-arm 9 is accommodated inside the arm holding member 11 , and the belt 19 is stretched over a driving roller 23 via a guide roller 21 .

Inside the arm holding member 11, a drive motor M1 and a rotary encoder R1 are attached. The drive motor M1 rotates the drive roller 23 . A rotary encoder R1 detects the direction and amount of rotation of the drive motor M1. The rotation of the rotation motor M1 causes the C-arm 9 to rotate in the body axis direction of the subject M via the belt 19 . For convenience of explanation, the drive motor M1 and the rotary encoder R1 are shown outside the arm holding member 11 in FIG.

Rotation of the C-arm 9 around the body axis of the subject M is realized by rotating the arm support member 11 around the horizontal axis RB, that is, around the body axis of the subject M. FIG. The base of the arm holding member 11, that is, the end opposite to the side holding the C-arm 9, is rotatably supported by the side surface of the support 13, and a gear 25 is fixed near the supporting surface. It is

The gear 25 is meshed with a pinion gear 27 , and the pinion gear 27 is attached to the output shaft of the drive motor M<b>2 provided inside the support column 13 . The C-arm 9 rotates about the body axis of the subject M together with the arm holding member 11 as the drive motor M2 rotates. The direction and amount of rotation of drive motor M2 are detected by rotary encoder R2.

As shown in FIG. 3, the X-ray fluoroscopic imaging apparatus 1 further includes an X-ray irradiation control section 29, an image generation section 30, an image display section 31, a motor control section MD1, a motor control section MD2, a rotational position detection section 33, a main control A unit 35 , a storage unit 37 and an operation console 39 are provided. The X-ray irradiation controller 29 is configured to output high voltage to the X-ray tube 5 . Then, based on the high voltage output given by the X-ray irradiation control unit 29, the X-ray dose emitted by the X-ray tube 5 and the timing of X-ray irradiation are controlled.

The image generator 30 is provided after the X-ray detector 7 and generates an X-ray image based on the X-ray detection signal output from the X-ray detector 7 . The image display unit 31 is provided after the image generation unit 30 and displays the X-ray image generated by the image generation unit 30 . An example of the image display unit 31 is a liquid crystal monitor. Examples of the configuration for disposing the image display unit 31 include a configuration in which it is suspended from the ceiling, a configuration in which it is mounted on a mobile cart, and the like.

The motor control unit MD1 is provided upstream of the drive motor M1, and controls the direction and amount of rotation of the drive motor M1. The motor control unit MD2 is provided upstream of the drive motor M2, and controls the direction and amount of rotation of the drive motor M2.

A rotational position detector 33 detects the rotational position of the C-arm 9 based on the direction and amount of rotation of the drive motor M1 detected by the rotary encoder R1 and the direction and amount of rotation of the drive motor M2 detected by the rotary encoder R2. To detect. The rotational position of the C-arm 9 is specified by the rotational direction and rotational angle of the C-arm 9 .

The rotation direction of the C-arm 9 is expressed as follows. As shown in FIG. 4, among the body axis directions of the subject M, the head side direction is hereinafter referred to as "CRA" (Cranial), and the foot side direction is hereinafter referred to as "CAU" (Caudal). Among the directions around the body axis of the subject M, the direction of rotation to the left as viewed from the head side is hereinafter referred to as "LAO" (Left Anterior Oblique), and the direction of rotation to the right as viewed from the head side is hereinafter referred to as " RAO” (Right Interior Oblique).

The rotation direction of the C-arm 9 is the direction in which the C-arm 9 rotates (CRA or CAU) in the body axis direction of the subject M, and the rotation direction in which the C-arm 9 rotates in the body axis direction of the subject M. It is represented by a combination of moving directions (LAO or RAO). The rotation angle of the C-arm 9 is expressed by a combination of the rotation angle of the C-arm 9 in the direction of the body axis of the subject M and the angle of rotation of the C-arm 9 in the direction around the body axis of the subject M. be.

The rotation position detection unit 33 detects the rotation direction and the rotation angle of the C-arm 9 in the body axis direction of the subject M based on the information about the rotation direction and rotation amount of the drive motor M1 transmitted by the rotary encoder R1. Calculate the information of Then, the rotation position detection unit 33 rotates the C-arm 9 around the body axis of the subject M based on the information about the rotation direction and rotation amount of the drive motor M2 transmitted by the rotary encoder R2. Detect angle information. Based on these pieces of information, the rotation direction and rotation angle of the C-arm 9 are calculated.

The main control unit 35 includes information processing means such as a central processing unit (CPU), for example. The main control unit 35 centrally controls various components of the X-ray fluoroscopic imaging apparatus 1 such as the motor control unit MD1, the motor control unit MD2, the X-ray irradiation control unit 29, the image generation unit 30, and the image display unit 31, for example.

The storage unit 37 stores information on X-ray imaging conditions such as tube voltage and tube current, various X-ray images generated by the image generation unit 30, information on image processing by the image generation unit 30, and information on the rotational position of the C-arm 9. Stores various types of information, such as information.

The operator's console 39 is for inputting operator's instructions regarding the operation of the X-ray fluoroscopy apparatus 1 , and the main control unit 35 performs integrated control according to the operator's input to the operator's console 39 . Examples of the console 39 include a keyboard input type panel, a touch input type panel, a mouse, a dial, a switching type switch, a push button type switch, and the like.

In this embodiment, it is assumed that the console 39 is attached to the side of the top plate 3 as shown in FIG. In this case, the operator operates the console 39 while standing near the tabletop 3 . By attaching an operation console 39 to the top plate 3, the operator can perform various operations on the X-ray fluoroscopic imaging apparatus 1 while performing procedures such as catheterization or examinations on the subject M. .

The operation console 39 is not limited to being attached to the side of the top plate 3, and may be arranged on the upper surface of a movable carriage. Further, the operation console 39 is not limited to being arranged on the long side of the top plate 3 , and the operation console 39 may be attached to the short side of the top plate 3 .

Next, main operation devices provided on the console 39 will be described. The console 39 includes an arm control lever 41, a touch panel 43, a rotation instruction switch 45, and an end instruction switch 47, as shown in FIG.

The arm control lever 41 is configured to be tiltable in the front, rear, left, and right directions, and adjusts the rotational position of the C-arm 9 . As an example, the operator grips the arm control lever 41 and tilts it forward, thereby rotating the C-arm 9 in the LAO direction. The rotation angle of the C-arm 9 changes according to the tilting angle or the tilting time of the arm control lever 41 . Also, when the operator holds the arm control lever 41 and tilts it leftward, the C-arm 9 rotates in the CRA direction. By using the arm control lever 41, the operator can finely adjust the rotational position of the C-arm 9 manually.

The touch panel 43 performs an operation to store the rotational position of the C-arm 9, and displays a large number of icon-type switches. Also, by appropriately switching between a plurality of modes such as the initial mode, the registration mode, and the edit mode, the displayed icon switches are changed. The configuration and various modes of the touch panel 43 will be described later. The touch panel 43 corresponds to the rotation position information display section in the present invention.

The rotation instruction switch 45 is a push-button type switch, and moves the C-arm 9 to a predetermined rotation position. That is, by pressing the rotation instruction switch 45 while selecting a specific rotation position stored using the touch panel 43, the C-arm 9 is rotated toward the specific rotation position. The rotation instruction switch 45 corresponds to the rotation instruction section in the present invention.

The termination instruction switch 47 is a push-button type switch, and is operated when a predetermined surgical procedure for the subject M is completed. When the operator presses the termination instruction switch 47, the X-ray fluoroscopic imaging apparatus 1 can perform operations related to the next surgical procedure or operations related to the end of the operation. In this embodiment, when the operator presses the end instruction switch 47, the rotation position information stored in association with each of the memory switches 57 constituting the second memory switch group M2 described later is erased. be done.

Although the four operation devices related to the adjustment of the rotational position of the C-arm 9 have been described here, the operation devices provided on the console 39 are not limited to these four devices. That is, operation devices related to the operation of the X-ray fluoroscopic imaging apparatus 1, such as a switch for switching on/off of the main power supply, a switch for setting X-ray imaging conditions, a switch for adjusting the position of the tabletop 3, or an emergency stop switch, are provided. Furthermore, it can be provided as appropriate.

Next, the configuration of the touch panel 43 will be described in detail. FIG. 6 is a diagram showing the touch panel 43 in the initial mode. The initial mode is the mode of the touch panel 43 in the initial state, and is a mode for executing an auto-positioning operation to automatically rotate the C-arm 9 to a predetermined rotation position.

<Configuration of initial mode>
The touch panel 43 has a first memory switch group M1, a second memory switch group M2, a registration transition switch 49, and an edit transition switch 51 in the initial mode. In this embodiment, each switch is an icon displayed on the touch panel 43 .

The first memory switch group M1 has a center switch 53 and a plurality of memory switches 55 . The center switch 53 is arranged in the center of the first memory switch group M1, and displays a human-shaped symbol representing a subject M in a supine posture. Each memory switch 55 is arranged around the center switch 53 . In this embodiment, as shown in FIG. 6, the first memory switch group M1 is assumed to have eight memory switches 55a to 55h. The number of memory switches 55 is not limited to eight and may be changed as appropriate.

The first memory switch group M1 is configured such that each switch is associated with information on a plurality of rotational positions. In this embodiment, each memory switch 55 is configured to be associated with three rotational position information. Specifically, as shown in FIG. 7 , the storage section 37 includes a rotational position storage section 61 . The rotation position storage unit 61 stores predetermined rotation position information in association with the memory switch 55 .

The rotational position storage unit 61 includes a plurality of first memories 63 , second memories 64 and third memories 65 corresponding to each of the memory switches 55 . Hereinafter, when the first memory 63, the second memory 64, and the third memory 65 are collectively referred to, they will be referred to as memories 63-65. Each of the memories 63 to 65 can store one piece of rotational position information of the C-arm 9 .

Specifically, as shown in FIG. 7, each memory switch 55 is associated with a total of three memories 63-65. Therefore, the rotational position storage unit 61 can store three types of rotational position information in association with each of the memory switches 55 .

Note that, as shown in FIG. 8, the memories 63 to 65 corresponding to the memory switch 55a are distinguished from the other memories 63 to 65 by adding a symbol a to the memories 63a to 65a. Similarly, the memories 63 to 65 corresponding to the memory switch 55n are distinguished from the other memories 63 to 65 by attaching the symbol n.

FIG. 9 shows information on the rotational positions pre-stored in association with each of the memory switches 55a to 55h. That is, the memory switch 55a stores the corresponding rotational positions such that the C-arm 9 turns from the initial position shown in FIG. 1 in the CRA direction and the LAO direction.

First, information on the position where the C-arm 9 has rotated 30° in the LAO direction from the initial position and 30° in the CRA direction (information on the rotation position F1) is stored in advance in the first memory 63a in correspondence. ing. In the second memory 64a, the position where the C-arm 9 has been rotated from the initial position by 20 degrees in the LAO direction and by 40 degrees in the CRA direction is associated and stored as a rotational position F2. In the third memory 65a, the position where the C-arm 9 has been rotated from the initial position by 50° in the LAO direction and by 10° in the CRA direction is associated and stored as a rotation position F2.

As information associated with the memory switch 55b, information on the rotational positions F4 to F6 is stored in each of the first memory 63b to the third memory 65b. Rotation positions F4 to F6 are rotation positions when the C-arm 9 is rotated in the LAO direction from the initial position. As information associated with the memory switch 55c, information on the rotational positions F7 to F9 is stored in each of the first memory 63c to the third memory 65c. This is the rotation position when the C-arm 9 is rotated from the initial position in the LAO direction and the CAU direction.

Similarly, information on the rotational positions F10 to F21 is stored in advance as information associated with the memory switches 55d to 55h. As shown in FIG. 8, it is assumed that rotation position information is not registered in the third memory 65g corresponding to the memory switch 55g and the second and third memories 64h and 65h corresponding to the memory switch 55h.

Note that the rotational position storage unit 61 further includes a memory 66 . The memory 66 is associated with the center switch 53, and information on the initial position of the C-arm 9 is stored in advance as the rotational position F0. That is, the center switch 53 is used when returning the C-arm 9 to its initial position.

The position at which each memory switch 55 is arranged with respect to the center switch 53 is determined according to the rotational position stored in association with the memory switch 55 . As an example, the memory switch 55a stores a corresponding rotation position for rotating the C-arm 9 from the initial position in the CRA direction and the LAO direction.

As shown in FIG. 4, with the position of the subject M as a reference, the CRA direction is the left direction and the LAO direction is the upper direction. Therefore, the memory switch 55a, which stores the rotational position information in the CRA direction and the LAO direction, is arranged on the upper left side of the center switch 53 as a reference. Similarly, for the memory switches 55b to 55h, the positions where the memory switches 55b to 55h are arranged are determined according to the directions of the correspondingly stored rotational positions. The position where the center switch 53 is arranged corresponds to the reference area in the present invention.

The second memory switch group M2 includes a plurality of memory switches 57. FIG. In this embodiment, as shown in FIG. 6, the second memory switch group M2 is assumed to have three memory switches 57a to 57c. The number of memory switches 57 is not limited to three and may be changed as appropriate. The first memory switch group M1 is used for long-term storage of information on the rotational position of the C-arm 9, while the second memory switch group M2 is used to temporarily store information on the rotational position of the C-arm 9. Used when

Each of the memory switches 57 is configured to be associated with information on one rotational position. That is, the rotational position storage unit 61 has the same number of short-term memories 67 as the memory switches 57 . In this embodiment, the number of memory switches 57 is three, so as shown in FIG. 7, the rotational position storage section 61 has three short-term memories 67a to 67c. Short-term memory 67a is associated with memory switch 57a, and short-term memory 67b is associated with memory switch 57b. Short-term memory 67c is associated with memory switch 57c.

As shown in FIGS. 6 and 8, the short-term memory 67a stores in advance a position where the C-arm 9 is rotated from the initial position by 40 degrees in the LAO direction and by 30 degrees in the CAU direction as a rotational position F22. there is It is assumed that rotation position information is not registered in the short-term memory 67b and the short-term memory 67c.

The registration shift switch 49 is for inputting an instruction to shift the screen displayed on the touch panel 43 from the initial mode to the registration mode. When the operator presses the registration shift switch 49, the display screen of the touch panel 43 shifts from the initial mode for auto-positioning to the registration mode. By shifting to the registration mode, it becomes possible to perform an operation to associate and store predetermined rotational position information in the first memory switch group M1.

The edit shift switch 51 is for inputting an instruction to shift the screen displayed on the touch panel 43 from the initial mode to the edit mode. When the operator presses the edit shift switch 51, the display screen of the touch panel 43 shifts from the initial mode for auto positioning to the edit mode. By shifting to the edit mode, it becomes possible to perform an operation to associate and store predetermined rotational position information in the second memory switch group M2. Registration mode or edit mode corresponds to storage mode in the present invention. The registration transition switch 49 or the edit transition switch 51 corresponds to the storage mode transition instruction section of the present invention.

The main control section 35 includes a reading section 69, a display control section 71, a storage control section 73, and a position information erasing section 75, as shown in FIG. The readout unit 69 selects and reads out rotation position information stored in the memories 63 to 66 or the short-term memory 67 according to the operation of the edit transition switch 51, the memory switch 55, or the like.

The display control unit 71 causes the touch panel 43 to display the rotation position information read by the reading unit 69 and additional information related to the read rotation position information. Examples of the additional information include information specifying the memory in which the read rotation position information is stored, information specifying the presence or absence of rotation position information stored in the memories 63 to 65, and the like. . The display control unit 71 corresponds to the selection memory switch display mechanism in the present invention.

The storage control unit 73 causes the rotation position storage unit 61 to store the rotation position information of the C-arm 9 using the operation of the registration instruction switch 83 described later as a trigger. The position information erasing section 75 erases the rotational position information stored in association with each of the memory switches 57 when a predetermined operation is performed on the X-ray fluoroscopic apparatus 1 as a trigger. In this embodiment, the operation of pressing the end instruction switch 51 is used as the trigger operation for erasing the rotation position information. The position information erasing section 75 corresponds to the rotation position information erasing section of the present invention.

<Auto positioning operation>
Next, the operation of performing auto-positioning using the X-ray fluoroscopic imaging apparatus 1 according to the present invention will be described. FIG. 9(a) shows a flow chart of the auto-positioning operation. Here, an example will be described in which the C-arm 9 is automatically rotated to the rotation position F8, which is rotated from the initial position by 45° in the LAO direction and by 20° in the CAU direction.

First, the operator activates the touch panel 43 of the console 39 to set the initial mode (step S1). When the touch panel 43 shifts to the initial mode, the display control unit 71 causes the touch panel 43 to display a screen for auto positioning as shown in FIG.

Next, the operator selects the memory switch 55 or the memory switch 57 associated with the target rotation position information (step S2). When selecting a memory switch 55 associated with a plurality of rotational position information, the operator can intuitively select an appropriate memory switch 55 based on the positions at which the memory switches 55a to 55h are arranged. As an example, when the C-arm 9 is rotated from the initial position in the LAO direction and the CAU direction, the LAO direction is the upper side and the CAU direction is the right side with respect to the human-shaped symbol displayed on the center switch 53 . That is, the operator can intuitively determine that it is appropriate to select the memory switch 55c arranged on the upper right side of the center switch 53 in order to rotate in the LAO direction and the CAU direction.

Since each memory switch 57 is associated with one rotation position information, the display control unit 71 can display the rotation position information on the touch panel in the initial mode. That is, as shown in FIG. 6, the information of the rotational position F22 registered in association with the memory switch 57a is displayed. Therefore, when auto-positioning is performed using the rotational position information associated with the memory switch 57, the operator looks at the screen of the touch panel 43 in the initial mode to determine the desired rotational position. The presence or absence of the memory switch 57 that is set can be determined. Here, as shown in FIG. 6, by visually recognizing the display of the second memory switch group M2, it can be determined that each of the memory switches 57a to 57c is not associated with the information on the rotational position F8. Therefore, the operator selects the memory switch 55c instead of the memory switch 57. FIG.

When the operator selects the memory switch 55, he or she operates the selected memory switch 55 in a different manner to read out the target rotational position information from the memories 63 to 65 (step S3). In this embodiment, the memories 63 to 65 to be read out are distinguished by the number of times the memory switch 55 is pressed.

That is, when the operator operates the memory switch 55 by pressing the memory switch 55 once (first mode), the reading unit 69 reads out the rotational position information stored in the first memory 63 . By pressing the memory switch 55 twice (second mode), the reading unit 69 reads the rotational position information stored in the second memory 64 . By pressing the memory switch 55 three times (third mode), the reading unit 69 reads out the rotation position information stored in the third memory 65 . When the memory switch 55 is pressed four times, the target of reading by the reading unit 69 returns to the first memory 63, and each time the memory switch 55 is pressed, the memory to be read is switched.

Information on the rotational position F8 is stored in the second memory 64c associated with the memory switch 55c, as shown in FIG. Therefore, the operator can select information on the rotational position F8 by pressing the memory switch 55c twice. Triggered by the operation of pressing the memory switch 55c twice, the reading unit 69 determines that the read target is the second memory 64c. Then, as shown in FIG. 11, the rotation position information is read from the second memory 64c and the information on the rotation position F8 is transmitted to the display control section 71. FIG.

The display control unit 71 causes the touch panel 43 to display information on the read rotational position F8. At this time, the display control unit 71 not only provides information about the rotational position F8, but also information (additional information Sp) indicating that the memory switch 55 that has been operated most recently is the memory switch 55c, and information about the reading process by the reading unit 69. Information (additional information Qt) indicating that the object is the second memory 64 out of the first memory 63 to the third memory 65 is displayed on the touch panel 43 . The display screen of the touch panel 43 changes from the state shown in FIG. 6 to the state shown in FIG. 10 by the control performed by the display control unit 71 . In the present invention, the "most recently operated memory switch 55" means the memory switch 55 most recently operated to be selected as the target of the auto-positioning operation, that is, the memory currently selected for the auto-positioning operation. Switch 55 is meant.

Examples of the additional information Sp include information for lighting, blinking, or changing the color of the selected memory switch 55 . In this embodiment, as shown in FIG. 10, the additional information Sp is indicated by thickly displaying the currently selected memory switch 55c. By displaying the additional information Sp on the touch panel 43, the operator can intuitively understand that the memory switch 55c of the first memory switch group M1 is selected.

In this embodiment, the additional information Qt includes two pieces of information specifying the number of rotational positions registered in the memory switch 55 and information specifying the memories 63 to 65 currently being read. there is The additional information Qt is, as shown in FIG. 10, three round symbols arranged side by side. The number of round symbols indicates the number of rotation positions registered in the memory switch 55 . The additional information Qt added to the memory switch 55c indicates three symbols. Therefore, by visually recognizing the additional information Qt, the operator can confirm that the number of pieces of rotation position information registered in the memory switch 55c at present is three.

In addition, the memory 63 to 65 currently being read out is specified by the position where the black circle symbol is arranged among the three round symbols forming the additional information Qt. As an example, when the read target is the first memory 63, the additional information Qt is ●○○. That is, the first symbol from the left is indicated by a black circle, and the remaining two symbols are indicated by white circles. When the read target is the second memory 64, the additional information Qt is ◯●◯. That is, the second symbol from the left is indicated by a black circle. When the read target is the second memory 64, the additional information Qt is ◯◯●. That is, the third symbol from the left is indicated by a black circle.

The display control unit 71 displays additional information on the memory switch 55 when the rotational position read out and displayed on the memory switch 55 matches the current rotational position of the C-arm 9 . The additional information is information that is displayed in a manner different from the additional information Sp, and includes information that blinks or changes the color of the memory switch 55 that is currently selected in whole or in part. By visually recognizing the additional information, the operator can confirm that the C-arm 9 has reached the rotation position displayed on the memory switch 55 to be selected. In this embodiment, the additional information is displayed by blinking the entire memory switch 55 that is currently selected.

The operator visually recognizes the rotation position information and the additional information Qt displayed on the memory switch 55c each time the memory switch 55c is pressed. By visually recognizing the rotation position information and the additional information Qt, the operator identifies the memories 63c to 65c to be read and confirms the content of the read rotation position information.

By pressing the memory switch 55c twice, the additional information Qt of ◯●◯ is displayed on the memory switch 55c as shown in FIG. Therefore, by visually recognizing the additional information Qt, the operator can read the information on the rotation position F8 stored in the second memory 64c among the first memory 63c, the second memory 64c, and the third memory 65c. You can intuitively understand what is going on.

After confirming that the rotation position information read out and displayed on the touch panel 43 is the target rotation position F8, the operator presses the rotation instruction switch 49 to move the C-arm 9. is rotated to the target rotation position (step S4). That is, when the rotation instruction switch 49 is pressed while the information on the rotation position F8, the additional information Sp, and the additional information Qt are displayed on the memory switch 55c, the C arm 9 performs an operation to rotate to the rotation position F8. When the C-arm 9 rotates and reaches the target rotation position F8, additional information indicating that the current position of the C-arm 9 matches the rotation position F8 is transmitted by the memory switch 55c. to be displayed. By visually recognizing the additional information, the operator confirms that the C-arm 9 has been rotated to the target rotation position F8. After confirming that the C-arm 9 has been rotated to the target rotation position, the operator irradiates the subject M with X-rays from the X-ray tube 5 to perform X-ray fluoroscopy or X-ray imaging.

<Configuration of registration mode>
Note that in this embodiment, the number of round symbols forming the additional information Qt is three. Therefore, if the target rotation position information is not displayed on the touch panel 43 even when the operator presses the memory switch 55 three times, the operator can confirm that the target rotation position information is not stored in the memory switch 55 . can be grasped easily and quickly.

As an example of using the registration mode, there is a case where the target rotation position information is not stored in any of the memory switches 55 . In such a case, the operator shifts the touch panel 43 to the registration mode and performs an operation to newly store information on the target rotation position. Here, a configuration for overwriting and storing new rotation position information in association with the memory switch 55 in the registration mode will be described.

When overwriting new rotation position information in association with the memory switch 55, first, the registration shift switch 49 is pressed to shift the touch panel 43 from the initial mode to the registration mode. By shifting to the registration mode, the display control unit 71 changes the display screen of the touch panel 43 from the state shown in FIG. 6 to the state shown in FIG.

As shown in FIG. 12, the touch panel 43 shifted to the registration mode includes a first memory switch group M1, a memory selection switch 77, a current position display section 79, a registration setting selection switch 81, a registration instruction switch 83, and a mode switch. and a return switch 85 . By shifting to the registration mode, the display control unit 71 registers the stored rotation position information for each of the memory switches 55 associated with the plurality of memories 63 to 65 in the first memory switch group M1. Additional information St suggesting the presence or absence is displayed.

Similar to the additional information Qt, the additional information St is three round symbols arranged side by side. The leftmost symbol indicates the presence or absence of rotation position information stored in the first memory 63 . The center symbol indicates the presence or absence of pivot position information stored in the second memory 64 . The rightmost symbol indicates the presence or absence of rotation position information stored in the third memory 65 . When a symbol is indicated by a black circle, it suggests that rotation position information has already been registered in the memories 63 to 65 corresponding to the symbol. If the symbol is indicated by a white circle, it suggests that the rotation position information has not yet been registered in the memories 63 to 65 corresponding to the symbol.

As an example, as shown in FIG. 8, the rotational position information of the memory switches 55a to 55f is already registered in the first memory 63 to the third memory 65. FIG. Accordingly, the three pieces of additional information St displayed on the memory switches 55a to 55f are indicated by black circle symbols (●●●). As for the memory switch 55g, only the third memory 65g has unregistered rotational position information. Therefore, the additional information St displayed on the memory switch 55g is indicated by three round symbols (●●◯) with only the right end being white. As for the memory switch 55h, rotation position information is registered only in the first memory 65h. Therefore, the additional information St displayed on the memory switch 55h is indicated by three round symbols (●◯◯) with only the left end blackened.

By visually recognizing the additional information St, the operator can intuitively and comprehensively grasp the presence or absence of the rotational position information stored in each of the memories 63 to 65 corresponding to the memory switches 55a to 55h.

The memory selection switch 77 selects one of the memories 63 to 65 in which the rotation position information is to be newly stored. The memory selection switch 77 is composed of a memory selection switch 77 a corresponding to the first memory 63 , a memory selection switch 77 b corresponding to the second memory 64 , and a memory selection switch 77 c corresponding to the third memory 65 . The number of memory selection switches 77 is determined according to the number of rotational position information stored corresponding to the memory switches 55 .

The current position display section 79 displays information on the current rotational position of the C-arm 9 detected by the rotational position detection section 33 as needed. The registration setting selection switch 81 is a first switch 81a for shifting to a state (direct registration mode) for registering information on the current rotational position of the C-arm 9, and for registering information on the rotational position arbitrarily set by the operator. and a second switch 81b that shifts to a state (manual registration mode) that allows In the registration mode in the initial state, the direct registration mode by the first switch 81a is selected.

<Operation in registration mode>
Here, an operation for registering new rotation position information in the memory switch 55 in the registration mode will be described. FIG. 9(b) shows a flowchart of an operation for registering new rotation position information in the memory switch 55. As shown in FIG. Here, an example will be described in which information on the rotational position FA, which is the current position of the C-arm 9, is newly registered in the third memory 65a corresponding to the memory switch 55a. The rotation position FA is a position where the C-arm 9 is rotated 25° in the LAO direction and 15° in the CRA direction from the initial position.

First, the operator presses the registration shift switch 49 to shift the touch panel 43 from the initial mode to the registration mode (step P1). When the touch panel 43 shifts to the registration mode, the display control unit 71 causes the touch panel 43 to display a registration mode screen as shown in FIG.

Next, the operator selects the memory switch 55 for which new rotational position information is to be registered (step P2). Since the memory switch 55a is to be registered here, the operator presses the memory switch 55a. Triggered by the memory switch 55 being selected and pressed, the display control unit 71 causes the touch panel 43 to display additional information specifying the selected memory switch 55 . In this embodiment, as shown in FIG. 13, the additional information is indicated by displaying the outline of the selected memory switch 55 (here, memory switch 55a) in bold.

Also, when the memory switch 55 to be registered is selected, as shown in FIG. The position information is read and transmitted to the display control section 71 . The display control unit 71 causes the memory selection switch 77 to display each of the read rotation position information. As a result, as shown in FIG. 14, information on the rotational position F1 is displayed on the memory selection switch 77a. Similarly, information on the rotational positions F2 and F3 are displayed on the memory selection switches 77b and 77c.

When the memory switch 55 is selected, the operator confirms the rotation position information displayed on each of the memory selection switches 77 and selects the memory to be overwritten (step P3). Since the memory to be overwritten and registered is the third memory 65a, the memory selection switch 77c corresponding to the third memory 65a is selected and pressed. Triggered by the selection of the memory switch 77, the display control unit 71 displays additional information suggesting that the selected memory selection switch 77c is selected, as shown in FIG. . In FIG. 15, as with the additional information Sp, the additional information is indicated by the thick outline of the memory switch 77c.

When the memory switch 77 is selected, the operator uses the registration setting selection switch 81 to select either the direct registration mode or the manual registration mode (step P4). Since the direct registration mode for registering the current rotational position of the C-arm 9 has already been selected, the operator presses the registration instruction switch 83 without operating the registration setting selection switch 81 (step P5).

When the registration instruction switch 83 is pressed, as shown in FIG. 15, the display control unit 71 displays information indicating that the registration instruction switch 83 has been pressed, and the confirmation key 87 is displayed. be. When the operator operates the key for continuing the registration (here, the key displaying "Yes") among the confirmation keys 87, the information of the rotation position F3 is stored as shown in FIG. The storage control unit 73 overwrites and stores the information of the rotational position FA in the third memory 65a. When returning the touch panel 43 to the initial mode, pressing the mode return switch 85 causes the touch panel 43 to shift from the registration mode to the initial mode.

In the direct registration mode, the current rotational position of the C-arm 9 can be registered in association with the memory switch 55 . That is, it is possible to quickly register information on the rotational position while omitting the operation of confirming the accurate rotational position of the C-arm 9 at the present time.

If the rotation position information is to be registered in the manual registration mode, the second switch 81b is pressed in step P4. By pressing the second switch 81b, the display screen of the touch panel 43 is switched to the screen shown in FIG. That is, the set position display section 80 and the adjustment key 86 are displayed on the touch panel 43 instead of the current position display section 79 . By appropriately operating the adjustment key 86 or the like, the operator adjusts the rotational position information displayed on the set position display section 80 to the rotational position FA.

As an example of a specific adjustment operation, by pressing the body axis direction adjustment section 80a provided on the right side of the set position display section 80, the angle in the body axis direction (CRA/CAU direction) can be adjusted. Become. By appropriately operating the upward key or downward key that constitutes the adjustment key 86 after pressing the body axis direction adjusting portion 80a, the angle in the body axis direction can be arbitrarily adjusted. Further, by pressing the body axis adjustment section 80b provided on the left side of the set position display section 80, the angle in the direction (LAO/RAO direction) around the body axis can be adjusted.

After the setting position display section 80 is adjusted so that the information of the rotation position FA is displayed, the operation of step P5 is performed. That is, the operator presses the registration instruction switch 83 and the confirmation key 87 . By operating the key for continuing the registration among the confirmation keys 87, the storage control section 73 overwrites the information of the rotation position FA displayed on the setting position display section 80 to the third memory 65a.

In the manual registration mode, there is no need to previously move the C-arm 9 to the actual target rotational position. Therefore, when the information on the rotational position to be registered is known in advance, the information on the rotational position can be registered in association with the memory switch 55 more quickly.

<Configuration of edit mode>
When a surgical procedure is performed on the subject M, an operation may be performed to repeat the act of acquiring X-ray images from a plurality of different directions with respect to the same site of interest. As an example, the surgical procedure is progressed while repeating the operation of reciprocating the C-arm 9 between the first rotational position Fp and the second rotational position Fs determined for each subject M or type of surgical procedure. Let

When performing an operation to reciprocate the C-arm 9 between predetermined rotational positions, information on the rotational position Fp and the rotational position Fs is temporarily registered in order to shorten the time required for the reciprocating operation, and the auto positioning operation is performed. It is desirable to At the first rotation position Fp and the second rotation position Fs, a suitable X-ray fluoroscopic image is obtained by performing X-ray fluoroscopy while moving the C-arm 9 to various rotation positions with respect to the site of interest. It is generally determined as the resulting rotational position.

When it becomes necessary to register the rotation position for a short period of time during the procedure, the operator shifts the touch panel 43 to the edit mode, and registers the rotation position Fp and the rotation position in association with the second memory switch group M2. Register the information of the position Fs. Here, a configuration for temporarily storing new rotation position information in association with the memory switch 57 in the edit mode will be described.

When overwriting new rotation position information in association with the memory switch 57, first, the edit shift switch 51 is pressed to shift the touch panel 43 from the initial mode to the edit mode. By shifting to the edit mode, the display control unit 71 changes the display screen of the touch panel 43 from the state shown in FIG. 6 to the state shown in FIG.

The touch panel 43 shifted to the edit mode includes a plurality of memory switches 57a to 57c forming the second memory switch group M2, a current position display section 89, and a mode return switch 91. FIG.

By shifting to the edit mode, the reading section 69 reads the rotational position information stored in the short-term memories 67a-67c associated with the memory switches 57a-57c. The display control unit 71 displays the rotation position information read from the short-term memories 67a to 67c on each of the associated memory switches 57a to 57c. In other words, information on the rotational position F21 is displayed on the memory switch 57a.

If the corresponding short-term memory 67 does not store the rotation position information, the display control unit 71 causes the corresponding memory switch 57 to display additional information Rp suggesting that the rotation position information is unregistered. In this embodiment, a graphic combining a cross and a circle surrounding the cross is used as the additional information Rp.

As shown in FIG. 8, the rotation position information is not registered in the short-term memory 67b and the short-term memory 67c. Therefore, the display control unit 71 displays the additional information Rp on the memory switches 57b and 57c. By visually recognizing the information displayed on the memory switches 57a to 57c, the operator can intuitively grasp the presence or absence of registered rotational position information.

The current position display section 89 displays information on the current rotational position of the C-arm 9 detected by the rotational position detection section 33 as needed. As shown in FIG. 18, the current position display portion 89 displays the first rotation position Fp (LAO 40°, CAU 40°). The mode return switch 91 is a switch for inputting an instruction to return the touch panel 43 from the edit mode to the initial mode.

<Operation in edit mode>
Here, an operation for registering new rotational position information in the memory switch 57 in the edit mode will be described. FIG. 9(c) shows a flowchart of an operation for registering new rotation position information in the memory switch 57. FIG. Here, an example will be described in which information on the rotational position Fp and information on the rotational position Fs (RAO 40°, CAU 40°) are temporarily registered in the memory switch 57 . In this embodiment, the memory switches 57b and 57c do not have the rotational position information registered. shall be registered in association with each other.

First, the operator presses the edit shift switch 51 to shift the touch panel 43 from the initial mode to the edit mode (step T1). When the touch panel 43 shifts to the edit mode, the display control unit 71 causes the touch panel 43 to display an edit mode screen such as that shown in FIG.

Next, the operator selects the memory switch 57 for which new rotational position information is to be registered (step T2). The short-term memory 67b corresponding to the memory switch 57b is to be registered with the rotational position Fp displayed on the current position display section 89, so the operator selects the memory switch 57b.

After selecting the memory switch 57, the operator presses the selected memory switch 57 (step T3). When the memory switch 57 is pressed, information on the rotational position of the C-arm 9 detected by the rotational position detection section 33 is transmitted to the storage control section 73 as shown in FIG. Information specifying the short-term memory 67 associated with the pressed memory switch 57 is also transmitted to the storage control unit 73 .

Based on the received information, the storage control unit 73 registers the current rotational position information of the C-arm 9 in the short-term memory 67 corresponding to the depressed memory switch 57 . That is, when the operator presses the memory switch 57b, the information of the rotation position Fp is stored in the short-term memory 67b. When the information on the rotational position Fp is registered, the information on the rotational position Fp is displayed on the memory switch 57b instead of the additional information Rp.

Further, when registering the information of the rotational position Fs in association with the memory switch 57c, the operator depresses the memory switch 57c after rotating the C-arm 9 to the rotational position Fs. By rotating the C-arm 9 to the rotation position Fs, information on the rotation position Fs is displayed on the current position display section 89 as shown in FIG. By pressing the memory switch 57c in the edit mode, the information of the rotational position Fs, which is the rotational position of the C-arm 9 at the present time, is stored in the short-term memory 67c. By storing the information on the rotational position Fp and the rotational position Fs to be registered, the operation in the edit mode ends. When the operator presses the mode return switch 91, the touch panel 43 returns from the edit mode to the initial mode.

After returning to the initial mode, the operator alternately moves the C-arm 9 to the rotation position Fp and the rotation position Fs by auto-positioning operation. That is, the operator presses the memory switch 57b while the touch panel 43 is in the initial mode (steps S1 and S2). By pressing the memory switch 57b, additional information Sp is displayed on the memory switch 57b, suggesting that the memory switch 57b is selected (step S3). By pressing the rotation instruction switch 45 while the additional information Sp is displayed on the memory switch 57b, the C-arm 9 is rotated to the rotation position Fp (step S4).

When rotating the C-arm 9 from the rotating position Fp to the rotating position Fs, the operator presses the memory switch 57c. By pressing the rotation instruction switch 45 while the additional information Sp is displayed on the memory switch 57c, the C-arm 9 is rotated to the rotation position Fs. While performing X-ray fluoroscopy, the operator alternately rotates the C-arm 9 to the rotation position Fp and the rotation position Fs by the auto-positioning operation, so that the X-ray image obtained by the X-ray fluoroscopy can be referred to quickly. And it is possible to advance the surgical procedure accurately.

When the surgical procedure or examination for the subject M is finished, the operator presses the end instruction switch 47 provided on the console 39 . As shown in FIG. 21, the position information erasing section 75 is activated by the operation of pressing the end instruction switch 47 as a trigger. The position information erasing section 75 erases all information on the rotational positions stored in association with each of the memory switches 57 . That is, the position information erasing section 75 erases each of the rotation position information stored in the short-term memories 67a to 67c.

By using the edit mode in this way, the information on the rotational position Fp and the rotational position Fs is temporarily stored in the short-term memory 67 only while the surgical procedure for the patient M is being performed. Also, unlike the registration mode, the registration instruction switch 83 and confirmation key 87 need not be operated in the edit mode. That is, by a simple operation of pressing the memory switch 57 corresponding to the short-term memory 67 for temporarily storing the rotation position information, the rotation position information displayed on the current position display section 89 is stored in the short-term memory 67. be done. Therefore, by using the edit mode for registering in the second memory switch group M2, it is possible to shorten the steps required for registering the rotation position information.

The end instruction switch 47 must be operated in order to end the surgical procedure for the subject M. FIG. Therefore, by performing a series of operations necessary to end the surgical procedure for the subject M, the control for erasing the information in the short-term memories 67a to 67c is reliably performed with the operation of the end instruction switch 47 as a trigger. Therefore, it is possible to avoid forgetting to erase the information on the rotational position Fp and the rotational position Fs, which was important only in the surgical procedure for the subject M.

Since the information on the rotation position Fp and the rotation position Fs is automatically erased when the surgical procedure for the subject M is completed, when the X-ray fluoroscopic imaging apparatus 1 is used for another subject N next time, the memory Each of the short-term memories 67 associated with each of the switches 57 is surely in a state in which rotation position information is not registered. Therefore, the operator hesitates to overwrite and register the rotation position information in the short-term memory 67 because the previously registered rotation position information remains in the short-term memory 67. It is possible to avoid the problem of interfering with the progress of the surgical procedure for the new subject N.

<Effects of Configuration of Embodiment>
(Section 1) An X-ray fluoroscopic imaging apparatus according to one aspect of the present embodiment includes an X-ray tube 5 for irradiating X-rays on a subject M, and an X-ray tube 5 that is arranged to face the subject M. an X-ray detector 7 for detecting X-rays transmitted through the X-ray detector 7; and a C-arm 9 supporting the X-ray tube 5 and the X-ray detector 7 so as to face each other and capable of rotating about two orthogonal axes. , a rotational position detector 33 for detecting information on the rotational direction and rotational angle about each axis of the C-arm 9 as rotational position information; a plurality of memory switches 55; , or the memory switch 55, the rotational position information stored in association with the selected memory switch 55 is stored. and a rotation instruction switch 45 for rotating the C-arm 9 in the rotation direction and the rotation angle corresponding to the rotation position information displayed on the touch panel 43. The storage unit 61 is configured to store a plurality of pieces of rotational position information for each of the memory switches 55, and the touch panel 43 operates the memory switches 55 in a predetermined manner so that the memory switches 55 are operated in a predetermined manner. 55 is displayed in a predetermined display manner.

The effects of the X-ray fluoroscopic imaging apparatus 1 described in Item 1 will be described with reference to FIGS. 22 and 23. FIG. FIG. 22 shows an auto-positioning console 101 used in a conventional X-ray fluoroscopy apparatus.

The console 101 has a center switch 103 displaying a human-shaped symbol, and eight memory switches 105 arranged around the center switch 103 . Each of the memory switches 105 is distinguished as memory switches 105a to 105h. The operator console 101 also has a spare switch 107 which is a spare memory switch. A spare switch 107 is arranged at a location away from the center switch 103 .

The positional relationship between the memory switches 105a to 105h and the center switch 103 is determined so as to match the positional relationship between the rotational position of the C-arm and the subject placed on the tabletop. That is, the rotation positions toward the LAO direction and the CRA direction with respect to the subject are stored in association with the memory switch 105a arranged on the upper left side of the center switch 103. FIG.

By determining the memory switch 105 to be stored in association with the rotation position according to the positional relationship of the rotation position with respect to the subject, the memory switch 105 to be selected when performing the auto-positioning operation can be intuitively selected. can be comprehended. In other words, after the rotational positions toward the RAO direction and the CRA direction are stored in the memory switch 105f, the C-arm 9 may be auto-positioned to the rotational positions after a certain period of time. In this case, it can be intuitively understood that the information on the rotation position is registered in advance in the memory switch 105f arranged on the lower left side of the center switch 103. FIG.

Here, in the conventional X-ray fluoroscopy apparatus, when an auto-positioning operation is performed, one piece of rotation position information is stored in association with one memory switch. Therefore, when registering two or more rotational positions in the same direction in advance, it is difficult to store each rotational position in association with the memory switch 105 so that the rotational positions can be intuitively grasped.

As an example, it is assumed that the information of the rotation position M1 for rotating in the LAO direction and the CRA direction is already stored in association with the memory switch 105a. In this case, the memory switch 105a cannot store the information of the new rotation position M2 to be rotated in the LAO direction and the CRA direction in association with each other. When the information on the rotational position M2 is forcibly stored in association with the memory switch 105a, at least the information on the rotational position M1 already stored is lost.

Further, in the conventional configuration, when performing an operation to overwrite the information of the rotational position M1 with the information of the rotational position M2, the operation of newly registering the rotational position information to the memory switch 105 in which the rotational position information is not registered. , it is necessary to perform a different operation for the operation of the overwrite registration. As an example, the operation of newly registering a rotation position is an operation of pressing the memory switch 105 for a short time, while the operation of overwriting is an operation of keeping the memory switch 105 pressed for a long time, or the memory switch 105 and another switch. It is necessary to perform a complicated operation such as an operation of simultaneously pressing . As a result, when performing overwrite registration, there is a concern that the operation will take a long time or an erroneous operation will occur.

In the conventional configuration, when registering the information on the rotational position M2 while storing the information on the rotational position M1, it is common to store the information on the rotational position M2 in association with the auxiliary switch 107. be. However, the positional relationship between the auxiliary switch 107 and the center switch 103 does not reflect the positional relationship between the subject and the rotation position M2.

Therefore, when the C-arm 9 is rotated again to the rotation position M2 by the auto-positioning operation after the information of the rotation position M2 is registered, the operator selects which switch to read the information of the rotation position M2. I wonder if I can get it out. As a result, the time required for the auto-positioning operation is lengthened, and there is concern about the problem of impeding the rapid progress of the surgical procedure.

Such a problem becomes particularly conspicuous when a surgical procedure based on an auto-positioning operation is performed on a large number of subjects. That is, a situation may occur in which a predetermined rotational position is registered for each surgical procedure performed on a subject. Therefore, when surgical procedures are performed on a large number of subjects, a situation quickly arises in which rotation position information has already been registered in a predetermined memory switch 105 and new rotation position information cannot be registered.

As a solution to the problem that the situation in which information on the rotational position cannot be registered in the memory switch 105 occurs quickly, a configuration in which a plurality of sets of memory switches 105a to 105h are arranged is conceivable. That is, a plurality of memory switches 105a are provided, and a plurality of memory switches 105b to 105h are also provided.

However, in order to arrange a plurality of sets of memory switches 105a to 105h while maintaining their positional relationship with the center switch 103, it is necessary to arrange the memory switches 105a to 105h as shown in FIG. That is, since a plurality of sets of memory switches 105a to 105h are arranged so as to spread radially around the center switch 103, it is necessary to increase the size of the operator console 101 in order to arrange all of the memory switches 105. FIG. As a result, there is a concern that it will be difficult to secure a space for arranging the operator console 101 .

In contrast to such a conventional configuration, according to the X-ray fluoroscopic imaging apparatus 1 described in Item 1, the touch panel 43, the plurality of memory switches 55, the rotation position storage section 61, and the rotation instruction switch 45 and By selecting one of the memory switches 55 , the touch panel 43 displays the rotational position information stored in association with the selected memory switch 55 . The rotational position storage unit 61 stores the rotational position information of the C-arm 9 in association with one of the memory switches 55 . is configured to When the memory switch 55 is operated in a predetermined operation mode, the touch panel 43 displays one of the plurality of rotation position information stored in association with the memory switch 55 in a predetermined display mode. It is configured.

That is, the X-ray fluoroscopic imaging apparatus 1 is configured so that each memory switch 55 can be associated with and stored with a plurality of rotational positions. Therefore, while reducing the number of memory switches 55, more rotation position information can be associated with the memory switches 55 and stored for a long period of time.

Each of the plurality of rotation position information stored in association with one memory switch 55 is displayed in a predetermined display mode by operating the memory switch 55 arranged on the touch panel 43 in a predetermined operation mode. be done. That is, even if a plurality of rotational positions are stored in association with one memory switch 55, information on each rotational position can be selectively read and displayed according to the operation mode of the memory switch 55. FIG.

By operating the rotation instruction switch 45 , the C-arm 9 can be rotated in the rotation direction and rotation angle corresponding to the rotation position information displayed on the touch panel 43 . Therefore, in the configuration in which a plurality of rotational positions are stored in association with one memory switch 55, one rotational position is selected from the plurality of stored rotational positions and the C-arm is moved to the selected rotational position. An operation to rotate 9 becomes possible.

In particular, when the operation mode of the memory switch 55 is the number of times the memory switch 55 is pressed, a plurality of pieces of rotation position information stored in association with the memory switch 55 according to the number of times the memory switch 55 is pressed. One of them is displayed on the touch panel 43 in order. When the desired rotation position information is displayed on the touch panel 43, the operator can operate the rotation instruction switch 45 to rotate the C-arm 9 to the rotation position. In this case, an auto-positioning operation of rotating the C-arm 9 to a desired rotation position can be realized by simply pressing down each switch. That is, since complicated operations such as an operation of pressing a switch for a long time or an operation of simultaneously pressing a plurality of switches are not required, the auto-positioning operation can be accurately performed in a short time.

(Section 2) In the X-ray fluoroscopy apparatus described in Section 1, each of the memory switches 55 is stored in correspondence with the memory switch 55 based on the reference area indicating the position of the subject M. It is arranged at a position corresponding to the rotation direction.

According to the X-ray fluoroscopy apparatus described in item 2, the position at which each of the memory switches 55 is arranged with reference to the center switch 53 is the rotational position F0 stored in association with the center switch 53. As a reference, it is determined so as to correspond to the direction of the rotational position stored in association with the memory switch 55 .

With such a configuration, the rotational position stored in association with the memory switch 55 is centered based on the direction in which the memory switch 55 is arranged with the position at which the center switch 53 arranged as a reference. The operator can intuitively grasp in which direction the switch 53 is located with reference to the initial rotation position F0 associated with the switch 53 . Therefore, the time required for the auto-positioning operation can be shortened, and the occurrence of erroneous operations in the auto-positioning operation can be reliably avoided.

As an example, the memory switch 55h is arranged on the lower right side of the center switch 53. FIG. For this reason, the operator intuitively understands that the memory switch 55h stores the information of the rotation position to the lower right direction, that is, the RAO direction and the CAU direction with reference to the initial rotation position F0. I can grasp it. Therefore, the operator can quickly select a switch stored in correspondence with information on a desired rotational position from among the plurality of memory switches 55a to 55h. Further, when registering new rotation position information, the operator can quickly select the memory switch 55 to be stored in association with the rotation position information.

(Section 3) An X-ray fluoroscopy apparatus according to a second aspect of the present embodiment includes an X-ray tube 5 for irradiating X-rays on a subject M, and an X-ray tube 5 that is disposed facing the X-ray tube 5. An X-ray detector 7 for detecting X-rays transmitted through M, and a C-arm 9 supporting the X-ray tube 5 and the X-ray detector 7 so as to face each other and capable of rotating about two orthogonal axes. , a rotational position detector 33 for detecting information on the rotational direction and rotational angle about each axis of the C-arm 9 as rotational position information, a plurality of memory switches 57, and a memory for the rotational position information. By selecting either the rotational position storage unit 61 stored in association with any one of the switches 57 or the memory switch 57, the rotational position stored in association with the selected memory switch 57 is selected. A touch panel 43 for displaying information, a rotation instruction switch 45 for rotating the C-arm 9 in a rotation direction and a rotation angle corresponding to the rotation position information displayed on the touch panel 43, and a series of commands for the subject M. and a position information erasing section 75 for erasing the rotation position information stored in association with each of the memory switches 57, triggered by an operation for instructing a predetermined specific process among the inspection processes.

According to the X-ray fluoroscopy apparatus described in Item 3, the touch panel 43, the plurality of memory switches 57, the rotation position storage section 61, the rotation instruction switch 45, and the position information erasure section 75 are provided. ing. By selecting one of the memory switches 57 , the touch panel 43 displays the rotational position information stored in association with the selected memory switch 57 . The rotational position storage unit 61 stores the rotational position information of the C-arm 9 in association with one of the memory switches 57 .

When the operator selects the memory switch 57 and the desired rotation position information stored in association with the memory switch 57 is displayed on the touch panel 43, the rotation instruction switch 45 is operated to perform the rotation. Rotate C-arm 9 to position. In this case, an auto-positioning operation of rotating the C-arm 9 to a desired rotation position can be realized by simply pressing down each switch. That is, since complicated operations such as an operation of pressing a switch for a long time or an operation of simultaneously pressing a plurality of switches are not required, the auto-positioning operation can be accurately performed in a short time.

When an operation is performed to designate a predetermined specific process out of a series of examination processes for the subject M, the position information erasing section 75 is stored in association with each of the memory switches 57 using the operation as a trigger. Delete rotation position information. With such a configuration, when a series of inspection processes for the subject M is completed, the rotation position information stored in association with each of the memory switches 57 is automatically erased. In other words, the storage of the rotational position information associated with the memory switch 57 is for temporary and short-term storage. Specifically, the information of the rotational position stored in association with the memory switch 57 when the subject is inspected is stored only during the inspection of the subject.

Therefore, at the time of starting the examination of a new subject, the information of the rotational position stored when the previous examination of the subject was performed does not remain in the memory switch 57 . Therefore, due to the memory switch 57 remaining in the memory switch 57, the information on the rotational position stored in the inspection performed in the past causes an operation to store new rotational position information in association with the memory switch 57. It is possible to avoid a situation in which the user is unable to perform the operation or hesitates to perform the memorization operation.

In this way, even if it becomes necessary to store a large number of rotation positions by performing inspections on a large number of subjects, the information on the rotation positions is erased each time the inspection of the subject is completed. be. Therefore, it is not necessary to continue to store the information on the rotational positions of all the subjects in association with the separate memory switches 57 . That is, the number of memory switches 57 is limited to the number of rotational positions that need to be stored in the examination of one subject. Therefore, while reducing the number of memory switches 57 arranged in the X-ray fluoroscopy apparatus 1, it is possible to appropriately perform examinations using the auto-positioning operation for a large number of subjects.

(Section 4) The X-ray fluoroscopy apparatus according to Section 3 further includes an edit transition switch 51 for shifting to an edit mode in which the rotation position storage unit 61 stores the rotation position information in the memory switch 57, By operating one of the memory switches 57 in the edit mode, the rotation position storage unit 61 stores the rotation direction and rotation angle of the C-arm 9 at the time of the operation as rotation position information. , are stored in association with the memory switch 57 .

According to the X-ray fluoroscopy apparatus described in Item 4, by operating any one of the memory switches 57, the rotation position storage unit 61 stores the rotation direction and rotation of the C-arm 9 at the time when the operation is performed. The movement angle is stored in association with the memory switch 57 as rotation position information. Therefore, by operating the memory switch 57 when it is determined that a suitable X-ray image has been acquired in X-ray fluoroscopy, information on the rotational position of the C-arm 9 at the time of acquisition of the X-ray image is automatically obtained. remembered. That is, since it is possible to quickly and accurately store the information on the rotational position according to the imaging conditions of the X-ray image, the rotational position of the C-arm 9 necessary for acquiring the X-ray image later can be easily and precisely reproduced. can.

(Item 5) In the X-ray fluoroscopic imaging apparatus according to any one of items 1 to 4, among the plurality of memory switches, the memory switch operated most recently by the operator is the other memory switch. A display control unit 71 is provided for displaying in different modes.

According to the X-ray fluoroscopy apparatus described in Item 5, the memory switch 55 (or memory switch 57) most recently operated by the operator is controlled by the display control unit 71 to be the other memory switch 55 (or memory switch 57). displayed in a different manner. With such a configuration, the operator can reliably identify the most recently operated memory switch among the plurality of memory switches. Therefore, it is possible to avoid erroneous operations in the auto-positioning operation and to shorten the time required for the operation.

<Other embodiments>
Note that the embodiments disclosed this time are illustrative in all respects and are not restrictive. The scope of the present invention includes the claims and all changes within the meaning and range of equivalents to the claims. As an example, the present invention can be modified and implemented as follows.

(1) In the above-described embodiment, the operator console 39 has the first memory switch group M1 and the second memory switch group M2, but the configuration is not limited to this. That is, out of the first memory switch group M1 and the second memory switch group M2, the operator console 39 may have only the first memory switch group M1, or may have only the second memory switch group M2. It may be a configuration.

(2) In the above-described embodiment or modified example, the registration mode using the first memory switch group M1 has been exemplified by the configuration in which the direct registration mode and the manual registration mode are selectively used, but only one of the modes is used. It may be a configuration. In addition, in the edit mode using the second memory switch group M2, by pressing the memory switch 57, the rotational position information of the C-arm 9 at the present time is stored. Not limited. That is, the configuration may be such that the manual registration mode can be selected even in the edit mode.

(3) In the above-described embodiment or modified example, the configuration of various switches arranged on the console 39 may be changed as appropriate, and icons displayed on the touch panel, dial switches, switching switches, push button switches, etc. etc., may be changed as appropriate.

FIG. 24 is a diagram illustrating an example of an operator console 39 according to a modification. In the console 39 according to the modification, the center switch 53, memory switch 55, and memory switch 57 are all push-button switches. That is, the console 39 according to the modification does not have the touch panel 43 .

Further, the console 39 according to the modification includes a rotation position display monitor 93 . When the memory switch 55 or the memory switch 57 is pressed, the rotation position display monitor 93 displays the rotation position information read by the reading unit 69 and various additional information added by the display control unit 71. . In the operator console 39 according to the modification, various switches such as the registration transfer switch 49, the edit transfer switch 51, the registration instruction switch 83, and the mode return switch 85 are also push button type switches.

An operation using the console 39 according to the modification will be described. As an example, when performing an auto-positioning operation to the rotation position F12 in the initial mode, the operator presses the memory switch 55d three times. By this pressing operation, the reading unit 69 reads information on the rotation position F12 from the third memory 65d, and the display control unit 71 causes the rotation position display monitor 93 to display the rotation position information together with the additional information Qt. The display control unit 71 also causes the memory switch 55d to display additional information Sp.

In a modified example, the additional information Sp is information for displaying the most recently selected memory switch 55d in a color different from that of the other memory switches 55. FIG. The operator confirms the information of the rotation position F12 displayed on the rotation position display monitor 93, and presses the rotation instruction switch 45. FIG. By pressing the rotation instruction switch 45, the C-arm 9 rotates to the rotation position F12.

In this manner, even with the console 39 that does not have the touch panel 43, the various switches and the rotation position display monitor 93 can be used to perform operations related to each mode.

(4) In the above-described embodiment or modified example, the center switch 53 is configured to be able to associate and store only one rotational position. may be configured.

(5) In the above-described embodiment or modified example, the operation that triggers the operation of the position information erasing section 75 is the pressing of the end instruction switch 51 for ending the surgical procedure for the subject M, but this is not the only case. can't As another example, the operation of turning on or off the main power supply of the X-ray fluoroscopic imaging apparatus 1 or the operation of starting a surgical procedure on the subject M may be used as a trigger to operate the position information erasing section 75 . That is, in a series of operations for completing the surgical procedure for the subject M, any essential operation can be appropriately applied as the trigger.

(6) In the above-described embodiment or modified example, each of the memory switches 55a-55h is associated with three memories 63-65, and configured to register information on up to three rotational positions. there is However, the maximum number of rotational positions that can be registered in each of the memory switches 55a to 55h is not limited to 3, and may be changed as appropriate. That is, by appropriately changing the number of memories associated with the memory switch 55, the number of registerable rotation positions can be arbitrarily adjusted. Further, the maximum number of registered rotational positions is not limited to the same configuration for all of the memory switches 55a to 55h. As an example, the memory switch 55a may be configured to be capable of registering up to two pieces of rotation position information, while the memory switch 55g may be configured to be capable of registering up to four pieces of rotation position information.

(7) In the above-described embodiment or modified example, as a method of registering information on the rotational position of the C-arm 9 in the memory switch 57, after switching from the initial mode shown in FIG. 10 to the edit mode shown in FIG. Although the operation of pressing the memory switch 57 to be operated has been exemplified, the present invention is not limited to this. As an example, the configuration shown in FIG. 10 may be adopted in which the rotation position information is registered by pressing the memory switch 57 in the initial mode.

As a specific example, in the state of the initial mode, by pressing the memory switch 57b to which the additional information Rp is added, the information of the rotational position of the C-arm 9 at the time when the pressing operation is executed corresponds to the memory switch 57b. stored with the By making it possible to register the rotation position information in the memory switch 57 in the initial mode, the operation of registering the rotation position in the memory switch 57 can be simplified.

(8) In the above-described embodiment or modified example, the additional information Qt includes information specifying the number of rotation positions registered in the memory switch 55. However, the additional information Qt is associated with the memory switch 55. Information indicating the number of memories 63-65 may be included. That is, in the embodiment, the number of rotation positions currently registered in the memory switch 55 is suggested by the number of round symbols forming the additional information Qt. Instead, the number of round symbols forming the additional information Qt suggests the number of memories 63 to 65 associated with the memory switch 55 (upper limit number of rotational positions that can be registered in the memory switch 55). may

DESCRIPTION OF SYMBOLS 1...X-ray radiography apparatus 3...Top plate 5...X-ray tube 7...X-ray detector 9...C arm (support mechanism)
DESCRIPTION OF SYMBOLS 17... Collimator 29... X-ray irradiation control part 30... Image generation part 31... Image display part 33... Rotating position detection part 35... Main control part 37... Storage part 39... Operator console 41... Arm operation lever 43... Touch panel 45... Rotation instruction switch (rotation instruction part)
47 ... end instruction switch 49 ... registration transition switch 51 ... edit transition switch 53 ... center switch 55 ... memory switch 57 ... memory switch 61 ... rotation position storage section 63 ... first memory 64 ... second memory 65 ... third memory 67 ... short-term memory 69 ... reading unit 71 ... display control unit (selection memory switch display mechanism)
73 ... Storage control section 75 ... Position information erasing section (rotational position information erasing section)
77 ... Memory selection switch 79 ... Current position display unit 83 ... Registration instruction switch 85 ... Mode return switch 89 ... Current position display unit 91 ... Mode return switch 93 ... Rotating position display monitor

Claims (5)

an X-ray tube for irradiating an object with X-rays;
an X-ray detector disposed facing the X-ray tube and configured to detect X-rays transmitted through the subject;
a support mechanism that supports the X-ray tube and the X-ray detector so as to face each other and is rotatable about two orthogonal axes;
a rotation position detection unit that detects information about a rotation direction and a rotation angle about each axis of the support mechanism as rotation position information;
a plurality of memory switches;
a rotation position storage unit that stores the rotation position information in association with one of the memory switches;
a rotation position information display unit for displaying the rotation position information stored in association with the selected memory switch by selecting one of the memory switches;
a rotation instruction unit configured to rotate the support mechanism in the rotation direction and the rotation angle corresponding to the rotation position information displayed on the rotation position information display unit;
with
The rotational position storage unit is configured to store a plurality of pieces of rotational position information for each of the memory switches,
When the memory switch is operated in a predetermined operation mode, the rotation position information display section displays one of the plurality of rotation position information stored in association with the memory switch in a predetermined display mode. X-ray fluoroscopy apparatus configured to display in. In the X-ray fluoroscopy apparatus according to claim 1,
Each of the memory switches is arranged at a position corresponding to the rotation direction stored in association with the memory switch, with reference to a reference area indicating the position of the subject. an X-ray tube for irradiating an object with X-rays;
an X-ray detector disposed facing the X-ray tube and configured to detect X-rays transmitted through the subject;
a support mechanism that supports the X-ray tube and the X-ray detector so as to face each other and is rotatable about two orthogonal axes;
a rotation position detection unit that detects information about a rotation direction and a rotation angle about each axis of the support mechanism as rotation position information;
a plurality of memory switches;
a rotation position storage unit that stores the rotation position information in association with one of the memory switches;
a rotation position information display unit for displaying the rotation position information stored in association with the selected memory switch by selecting one of the memory switches;
a rotation instruction unit configured to rotate the support mechanism in the rotation direction and the rotation angle corresponding to the rotation position information displayed on the rotation position information display unit;
Turning position information for erasing the turning position information stored in association with each of the memory switches, triggered by an operation for instructing a predetermined specific process out of a series of examination processes for the subject. an erasing unit;
An X-ray fluoroscopic imaging apparatus comprising: In the X-ray fluoroscopy apparatus according to claim 3,
a storage mode shift instructing unit for shifting to a storage mode in which the rotational position information is stored in the memory switch by the rotational position storage unit;
By operating any one of the memory switches in the state of shifting to the storage mode, the rotation position storage unit stores the rotation direction and the rotation angle of the support mechanism at the time when the operation is performed. An X-ray fluoroscopic imaging apparatus configured to be stored in association with the memory switch as rotational position information. In the X-ray fluoroscopic imaging apparatus according to any one of claims 1 to 4,
An X-ray fluoroscopic imaging apparatus comprising a selected memory switch display mechanism for displaying a memory switch operated most recently by an operator among the plurality of memory switches in a manner different from other memory switches.

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